patch 8.2.1274: Vim9: no error for missing white space at script level

Problem:    Vim9: no error for missing white space in assignment at script
            level.
Solution:   Check for white space. (closes #6495)

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1274,
 /**/
     1273,
 /**/